x2 + y2 = 106 மற்றும் x - y = 4 எனில், \(\rm \frac{1}{x}-\frac{1}{y}\) இன் மதிப்பு:

1
\(\frac{16}{45}\)
2
\(-\frac{16}{45}\)
3
\(\frac{4}{45}\)
4
\(-\frac{4}{45}\)

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